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Details for Benchmark: HL0284

N 37° 48.767 W 107° 39.767 (NAD 83)

Altitude: 9323.42

Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)

Location:
In SAN JUAN county, CO View Original Datasheet
Designation:
W 19
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Found without trouble using everybody else's coords and pictures.

[Photos:]
photoHL0284 - W19 mark

Found this benchmark while in Silverton.

Found while caching in Silverton.

[Photos:]
photo

N 37° 48.782 W 107° 39.774
Found as described.

[Photos:]
photoHL0284

Found when I didn't find nearby geocache. Thanks

Found in good condition

[Photos:]
photo
Close up

Found as described! :)

[Photos:]
photoW 19
photo/context
photo/context2

Found this while eating some ice cream. Looks pretty good.

Recovered as described.

[Photos:]
photoW 19, view to the north east.
Mark on the wall of the city hall building.
photoW 19 disk.
W 19 disk.

While geocaching found this marker.

Found this one while geocaching.

18:30 Hrs. While in Silverton,CO for a week of Jeepin'

[Photos:]
photoHL0284
W19

Found where described

[Photos:]
photomark
photoeye level
photofor reference

Found it when in the area.

[Photos:]
photoHL0284

Recovered as described.

[Photos:]
photoView NW
photoDisk

Found while caching in Silverton.

In good condition. Found it while on a school trip studying snow and ice processes in Silverton.

Came to town by train. Unprepared...but knew there had to be a BM somewhere...

[Photos:]
photoBM Photo

Found as described in good condition.

[Photos:]
photoHL0284 W 19

Found as described.
Recovery report submitted to the NGS.

[Photos:]
photoHL0284 W 19 1928 (AREA) SAN JUAN county, CO
Silverton City Hall
photoHL0284 W 19 1928 (CLOSEUP) SAN JUAN county, CO

found while visiting selverton by train

Here in Silverton for a week with 11 other Geography/Environmental Science students from the CU- Colorado Springs. Nice mark!

found with sgotu

a quick one to find

N 37° 48.778 W 107° 39.776

Bench Mark W 19 was recovered in good condition.

[Photos:]
photoHL0284 20060511 A2 E (San Juan Co. CO)
Another look east at Bench Mark W 19. This is the Silverton City Hall.
photoHL0284 20060511 A1 E (San Juan Co. CO)
East at Bench Mark W 19.
photoHL0284 20060511 B (San Juan Co. CO)
Bench Mark W 19 from Eye Level.
photoHL0284 20060511 C (San Juan Co. CO)
Bench Mark W 19.
photoHL0284 20060511 G (San Juan Co. CO)
Bench Mark W 19 w/GPSr.

Found in City Hall.

[Photos:]
photoHL0284-a
photoHL0284

Had help on this one. Mother in law and sister in law took Pic for me. was there several years ago and will be going back again later this year.

[Photos:]
photoW19
photoW19

Found imbedded in stone wall. had 1928 and W19 stamped on it.

[last edit: 6/15/2003 6:20:53 PM PST]

Documented History (by the NGS)

Unknown by CGS (MONUMENTED)
01/01/1928 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1928 IN SILVERTON. IN FRONT WALL OF THE CITY HALL, 10 FT. SOUTH OF MAIN ENTRANCE, BETWEEN ENTRANCE TO MAIN BUILDING AND ENTRANCE TO FIRE DEPARTMENT. MARK WITH FACE VERTICAL, 2 FEET ABOVE THE GROUND.
01/01/1935 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1935 RECOVERED IN GOOD CONDITION.
01/01/1985 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985 RECOVERED IN GOOD CONDITION. DISK IS STAMPED W 19 1928.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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